What is the formula for inductance, capacitance and resistance?
Inductance, capacitance and resistance. • Since inductive reactance varies with frequency and inductance the formula for this is X. l. =2πfL where f is frequency and L is Henrys and X. l is in Ohms. • Ohms law for inductance is the same as that used to combine resistances in series and parallel circuits.
How is capacitance and reactance related in farads?
The actual value of X C is inversely proportional to the value of capacitance and the frequency as shown in the formula: where X C is capacitive reactance in ohms, π is 3.14159 (…), F is frequency in hertz, and C is capacitance in farads.
What is the formula for inductive reactance in ohms?
• Since inductive reactance varies with frequency and inductance the formula for this is X l =2πfL where fis frequency and L is Henrys and X lis in Ohms. • Ohms law for inductance is the same as that used to combine resistances in series and parallel circuits.
When does resonance occur between inductor and capacitor?
• Resonance is when the frequency is such that a capacitor in series with an inductor cancel each other’s reactance. • Similar resonance in a parallel circuit with an inductor and capacitor will have infinite resistance at a resonant frequency.
When do inductors and capacitors create the most reactance?
• As previously discussed inductors and capacitors create loads on a circuit. • This is called reactance. • It varies depending on current and frequency. • At no frequency, or DC there is no reactance. • At low frequency capacitors create the most reactance • At high frequency inductors create the most reactance
Why does capacitance cause voltage to lag behind current?
• A capacitor will cause voltage to lag behind current because at 0 volts charge the circuit will be at maximum current. Inductance, capacitance and resistance • Therefore capacitive and inductive reactance counter, or cancel each other.